Burner.



Patented Sept. 25, 1900. M. CAHILL.

B U R N E B.

(Applicatibn filed May 29, 1899.)

(No Model.)

.,...wwu aw ww. H. m wm l'liiiiiii UNITED STATES PATENT OFFICE MORTIMER CAHILL, OF CHICAGO, ILLINOIS.

BURNER.

SPECIFICATION forming part-of Letters Patent No. 658,340, dated September 25 1900. Application filed May 29.1899. Serial No. 718,649. (No model-J To all whom it may concern:

Be it known that I,MORTIMER OAHILL,a citizen of the United States of America, residing at Chicago, in the county of Cook and State of Illinois, have invented certain newand usetul Improvements in Burners, of which the following is a specification.

My invention relates to improvements in burners adapted for the generation and consumption of hydrocarbon gases, the object of the invention being to secure practically perfect combustion of the gases and consequent development of the maximum of heat from their combustion.

The invention is fully described and explained in this specification and shown in the accompanying drawings, of which Figure 1 is an elevation of a burner embodying my improvements. Fig. 2 is a central longitudinal section through the line 2 2 in Fig. l, the view being in the direction indicated by the arrow at the lower end of said line 2 2. Fig. 3 is a top plan of the burner, the mantle and its support being removed. Fig. l is a side elevation of the shell of the converter. Fig. 5 is a top plan of the perforated skirt attached to and dependent from the shell, and Fig. 6 is an elevation of the plug or inner member of the converter.

In the views, A is the end portion of a tube communicating with a source of liquid-hydrocarbon supply, and B the outer portion or shell of a converter adapted to change the liquid hydrocarbon into gas, the innersurface of the shell B being preferably smooth and taperingslightlyinwardand upward. Within this shell is the plug or inner portion B of the converter, this element beinga hollow cone having an external taper fitting in the shell B and a continuous and preferablyspiral groove g, adapted to receive liquid hydrocarbon from the pipe A through a small opening a in the shell B. The lower end of the groove 9 communicates, by means of a passage 19, with a jet-opening J, formed in a yoke B dependent from the plug B, the jetopening being opened and closed by means of a screw-valve S in the lower end of the yoke. When the generator is in operation, the gas formed in the spiral groove 9 is forced downward through the passage 10 to the opening J and forms a flame, which passes upsheet-metal plate G, having an annular flange c at its outer edge and a series of arms 0 adapted to form lateral supports for a chimney resting upon the plate G. The neck 0 forms the support for the lower end of the mantle M of the ordinary type in use in incandescent vapor-lamps, the neck being en-' circled by the lower end of the mantle. I have found in the practical. use of lamps of this general class that it is desirable to supply a certain amount of air entering the space within the mantle at a point or points above the generator, and I have also observed that after the mantle has been in use forashort time it shrinks so that its lower end becomes absolutely tight upon the neck within it, and t-hus'prevents the passage ofair upward between the mantle il's'elf and the metal neck on which it is mounted. For this reason I have found it expedient to provide a'nairspace within the collar upon which the mantle is directly mounted, and it will be seen that there is such space between the collar 0 and the neck 17 of'the shell of the generator. The proper relation between the collar 0 and neck b maybe maintained in any simple manner as, for instance, by forming on the inner face of the collar ca series'of'in-wardly-punched lugs Z, adapted to hold the collar concentric with the neck, and thus to maintain an equal air-space throughoutthe circle of the parts.

The collar 0 is formed with a series of holes H below the edge of the mantle, and it is evident that air mayenter these holes and pass upward in the space between the collar 0 and the neck I), thus becoming heated before it reaches the combustion-chamber within the mantle.

While the construction shown in the drawings is cheap and simple, it is evident that the collar 0 and neck I) may, if desired, be made in a single piece, an annular groove being turned out to form the air-space and this groove being reached by holes in the position occupied by the holes H H, as shown in the drawings. Other constructions having the same effect will readily occur to any skilled mechanic, and I desire, therefore, not to limit the invention in this regard to the form shown in the drawings.

The shell B is formed with a downwardlycxtending neck B on which is mounted a downwardly-extending skirt D, preferably of sheet metal and flaring outward and downward from the neck B held in place on the neck 13 by friction alone or by means of one or more lugs Z, punched inward in the upper end of the skirt and adapted to enter a corresponding groove g in the neck B as shown in Fig. 4. The skirt D is formed near its lower end with a series of holes H, adapted to permit the passage of air inward to the lower end of the space within the plug B of the generator, and below these holes the skirt terminates in a cylindrical portion, which receives a cylindrical shell K, held in place either by friction or by means of coacting screw-threads formed in the sheet met-a1, as clearly indicated in Figs. 1 and 2. Within the lower end of the shell K is a cup K, adapted to be dropped into the shell through its upper end before the shell is mounted on the skirt D,

this cup being adapted to close the lower end of the shell K and also to serve as a reservoir for receiving alcohol in initiating the conversion of the liquid hydrocarbon into gas. The shell K may be vertically adjusted either by pushing it up and down or by means of the screwthread shown in the drawings. The object of this adjustment is to increase or decrease the space between the upper end of the shell K and the large central portion of the shell B of the converter, which lies immediately above the open upper end of the shell K, and by means of this adjustment the amount of air reaching the openings H on its way to the burner may be increased and decreased as desired, and may thus be so regulated as to secure practically perfect combustion. It is evident that this same result may be reached through the use of various modifications of the particular mechanisms described herein, and I desire,therefore, not to limit the invention as to this feature of the mechanism to the specific constructions shown and described.

I claim as new and desire to secure by Letters Patent- This skirt may be 1. In a burner of the class described, the combination with a tubular converter having its upper portion diminished to form a neck and an annular shoulder at the base of the same, of a sleeve encircling said neck, having lateral perforations near its base, and forming-the outerwall of an annular air-space about the neck, means for holding the sleeve concentric with the neck, a mantle fitting over the sleeve above said perforations, and means for supporting the mantle from above.

2. In a burner of the class described, the combination with a tubular converter having its upper portion diminished to form a neck and an annular shoulder at the base of the same of a concentric mantle-receiving sleeve encircling said neck to form the outer wall of an air-space about the same and provided with lateral perforations below the mantle thereon,an annular chimney-supportingplate resting upon said shoulder extending outward from the base of the sleeve, below said perforations, and a support secured to the plate for holding the upper end of the mantle.

3. In a burner of the class described, the combination with a tubular converter having its lower portion diminished to form a neck and a shoulder at the upper end of the same, of a shell, closed below, inclosing the lower part of the converter and an annular space about the same, said shell being arranged for adjustment toward and away from said shoulder to vary the amount of air admitted to the inclosed parts, and means for holding said shell concentric with said neck.

4. In a burner of the class described, the combination with a tubular converter having its lower portion diminished to form a neck and an annular shoulder about the upper end of the same, of a perforated annular. skirt mounted upon said neck, and a shell closed below,fitting around said skirt, and arranged for adjustment toward and away from said shoulder to vary the amount of air admitted between the shoulder and the edge of the shell.

In witness whereof I have hereunto set my hand, at Chicago, in the county of Cook and State of Illinois, this 26th day of May, 1899.

MORTIMER GAI-IILL.

Witnesses:

CHAS. O. SHERVEY, S. Brass. 

